All Questions
274 questions
1
vote
1
answer
421
views
Why won't my Canon 400D/XTi turn on/off properly?
My camera is a Canon 400D (digital rebel XTi). It sat on a shelf for quite some time.
When I insert a (newly charged) battery, the camera doesn't switch on. I get this screen:
and switching the ...
- 11
1
vote
2
answers
142
views
Reduce image sharpness and DPI [closed]
Why does the sharpness of the imag decrease when I increase the DPI of an image?
- 71
1
vote
2
answers
163
views
Different focus on different parts of the picture
I have a problem with the camera on my Xiaomi Mi A2. It mainly occurs when I take pictures of things far away. This problem is consistent. I have added a few pictures. You can see in one of the ...
1
vote
3
answers
301
views
What affects tripod stability?
I have a Vanguard Veo 2 265 CB tripod. I really like it and it has been performing, but lately I am trying to get my pictures as sharp as I can get and I noticed something. It must be trivial to ask,...
- 125
1
vote
2
answers
234
views
Why does grain increase acutance?
The Wikipedia article on acutance claims that a slight amount of noise or grain can increase acutance. Cambridge in Color gives the following demonstration.
No noise:
With noise, with more acutance:
...
- 131
1
vote
1
answer
317
views
Why is the Canon-mount Sigma 24mm F1.4 DG HSM Art sharper in the corner in DxOMark's ratings than Nikon-mount version?
Why is the Sigma 24mm F1.4 DG HSM A lens corner sharpness much better in the Canon version than the Nikon's, according to DxOMark's ratings?
Canon:
https://www.dxomark.com/Lenses/Sigma/Sigma-24mm-...
- 143
1
vote
1
answer
241
views
What causes blue and red gradient/shade around black spots in photos? [duplicate]
Right now I'm trying to improve the sharpness of my photos, and for that I've checking if my D7000 has some autofocus issues. Therefore I tested my 35mm f/1.8G and my 50mm f/1.4G. I figured that the ...
- 291
1
vote
2
answers
827
views
Bad focus. Is it me or my body (D7000)?
So I have a D7000. Grey market, which I didn't find out until after I had to send it in to get serviced. And it's never felt as...sharp as it should be. I always assumed it was just me. I am going on ...
- 976
1
vote
2
answers
666
views
Lower quality photos in burst mode
I took some photos of high speed skating and as there was too much motion involved, I switched to burst mode (continuous shots) hoping I'll get some good shots. But the sharpness of those taken in ...
- 549
1
vote
2
answers
70
views
Compensate aberration to improve the quality of a surveillance camera
I am analyzing the videos recorded by a surveillance camera and noticed that, in most scenes, there is a sort of "halo" around the right part of people passing by (also around the orange ...
- 113
1
vote
1
answer
1k
views
What does make a vintage lens not sharp and can we fix it?
Situation
I have this Takumar 200mm lens mounted on a Canon 60D with an m42 adapter. I really like the lens because of the bokeh it creates but the photos are so soft. I tried all the f numbers from 3....
- 259
1
vote
2
answers
25k
views
What kind of old 35mm point and shoot do I need to take photographs in the style of Gunnar Stahl?
I'm looking for a camera that shoots comparable to the Yashica t4 super/ Nikon l35af. I love the sharpness the camera puts into the photo and the lighting with the flash is the look I want for a ...
- 85
1
vote
3
answers
942
views
Can't get my pictures sharp (Rebel Ti2 + tripod + Sigma 10-20 f/3.5 EX DC)
I'm really into landscape photography but I can't get my pictures to look sharp. They look boring and dull. I focused to infinity by using the infinity symbol on my lens and by manually focusing using ...
- 243
1
vote
1
answer
5k
views
Sharpness and bokeh comparison of Nikon 50mm f/1.2, f/1.4G and f/1.8G
The contestants are Nikon 50mm f/1.2, f/1.4G and f/1.8G. The list prices are 38,550 INR, 27,990 INR and 18,000 INR respectively.
Bokeh: As with any portrait lens, I want a creamy bokeh performance ...
- 683
1
vote
2
answers
4k
views
DPP output is not sharp
I am using DPP (Digital Photo Professional by Canon) for post processing. Not sure what is wrong with it, but every time I produce an image (.JPEG) out of raw (.CR2) file, it turns blurry. I tried all ...
- 291
1
vote
2
answers
3k
views
How to get blurry backlights but sharp focused front face [duplicate]
Possible Duplicate:
How can I maximise that “blurry background, sharp subject” (bokeh) effect?
How can I take shallow depth of field photos with a point-and-shoot camera?
I have simple Nikon ...
- 111
1
vote
2
answers
1k
views
How can I improve the sharpness of my pictures? [duplicate]
Possible Duplicate:
How I could take crisp sharp shots without expensive lens?
I have software to correct sharpness, the one I use the most in Linux is darktable. But post-processing never ...
- 965
1
vote
1
answer
314
views
How to calculate the optimal distance to photograph details for mobile phone lenses?
Most of the mobile phones I've owned have a primary, wide angle camera lens somewhere around 28mm. If I wanted to capture the most details/sharpness (the most pixels) and ignored perspective and ...
- 793
1
vote
1
answer
1k
views
Picture gets blurry when zooming in
My Nikon 3400's kit lens(18-55mm) works fine when I take pictures at 18mm. But when I extend lens beyond that, the picture gets blurry(no clarity). Though I can focus on extremely close distances ...
- 11
1
vote
1
answer
118
views
What is the optical problems in these test images and what causes them?
As I was recommended in the question How to determine which lenses are good at testing teleconverter quality? I was taking test pictures trying to determine lens/teleconverter quality. No I did not ...
- 1,611
1
vote
1
answer
151
views
Create a canvas-like style (a blurred effect)
Hi I would like to have a fluffy effect for the details of my image, and I have tried tools such as Sharpen, Blur in Fliter, and Clarity in RAW manipulation, but in vain.
The left hand side is the ...
- 111
1
vote
1
answer
228
views
How can I improve the sharpness of my Sigma 50mm 1.4 DG HSM lens? [duplicate]
I've had it for a while but haven't used it much because it is not sharp. Suggestions? Can it be sent off and is that expensive?
- 11
1
vote
1
answer
2k
views
Sigma 18-35 f/1.8 poor image quality
I recently bought for my D3300 two new lens. The Nikon 50mm f/1.8 and Sigma 18-35mm f/1.8 Art. As I expected, due to specifications and measurements in DXOMark, the 50mm lens is awesome. A lot more ...
- 153
1
vote
1
answer
680
views
Learning more about using my Canon EOS DIGITAL REBEL XTi [duplicate]
Possible Duplicate:
Digital Photography Tutorials
Hey everyone,
I aquired this camera from my dad, as he got another model, and I have some lenses and the Canon EOS DIGITAL REBEL XTi body.
I ...
- 111
1
vote
0
answers
98
views
AF not working on Manual mode AV or TV mode, and shutter not opening. however both AF and shutter opening on auto and not flash -EOS400d
I am testing an old EOS 400d to see if its worth using-
on auto mode and no flash mode- the camera focuses, I get the green light then it takes the photo once I fully press the trigger button,
in all ...
- 11
1
vote
0
answers
76
views
Losing sharpness - lens AF broken? [duplicate]
I have an 10 year old camera (Canon 400D) and primarily use a fixed Canon 1.8 50mm lens. This weekend I was using it and noticed most of my photos with that lens looking blurry and unfocused. Over ...
- 111
1
vote
2
answers
655
views
Will there be a noticable difference in sharpness and color between Nikon and Canon [duplicate]
Hi I have a Nikon D750 with a 70-200mm f2.8 VRii lens and a 35mm f1.8G ED lens. I mostly shoot family portraits. I was thinking about switching to the Canon 5D Mark IV with a 24-70mm f/2.8L II USM ...
- 143
1
vote
5
answers
3k
views
Does shooting landscape at lower f-stop produce reasonably sharp images?
This article argues that,
50mm prime lenses, on the other hand, have a maximum aperture of
somewhere between f1.2 and f2, letting you hand hold photos in much
lower light levels (they also give ...
- 683
0
votes
3
answers
988
views
Why are my product photographs not sharp?
I just bought a Canon 750D. The picture has too much noise. The detail/shine of the diamond is not really showing. I am also using a tripod and timer.
The lens is the EF-S 18-55mm ƒ/3.5-5.6 IS STM. ...
- 45
0
votes
2
answers
395
views
No flash mode pictures
OK so I'm an absolute beginner when it comes to photography. But here's the thing when I try to Take a picture in the no flash mode in the dark it won't take a picture but if I go into some light ...
0
votes
2
answers
285
views
Why is my lens sharpness much softer at f/1.2 than higher apertures when taking landscape pictures?
I recently bought a used Canon 50mm f/1.2 L USM and have been noticing that the lens is quite soft at f/1.2 (using a Canon 1DX Mark II, if relevant). Now it's the first time I am shooting at such ...
- 113
0
votes
2
answers
6k
views
Why do I get so many unsharp pictures with my Canon 70-200 IS f/2.8?
Please take a look at the picture below. You can see where the focus point was thanks to a LR plugin. But the image is unsharp - again. And yes, I'm sure the dog was standing still enough for 1/250 ...
- 391
0
votes
2
answers
179
views
How can I capture motion while maintaining the sharpness of the main subject with an iPhone?
I want to capture motions. I use shutter priority mode with very low speed to get motion blur. But still want to maintain the sharpness of the main subject. I'm using iphone Camera + app. But I couldn'...
- 217
0
votes
2
answers
637
views
How should I arrange a scene to test the relative sharpness of lenses with different focal lengths?
I want to compare sharpness of two lenses, consider 50mm f/1.8G vs 35mm f/1.8G from Nikon on a crop sensor camera by taking some photos (from some small size text on a paper) and review the results. ...
- 211
0
votes
2
answers
346
views
Can't get sharp focus on Canon 7D at 250mm f/32 [duplicate]
I'm an accomplished photographer (at least I thought I was) until I shot and re-shot a scene and it keeps turning out soft.
Settings: Canon 7D... 250 mm...f29...manual focus...1/40 exposure
I used a ...
0
votes
6
answers
3k
views
Can I use BULB setting when taking remote pictures?
I have a Canon XTi/400D, which I connect to my Mac OS X 10.6 and am trying to take pictures when tethered to it using EOS Utility, but I am not able to use the BULB setting on my laptop. Is this ...
- 188
0
votes
3
answers
882
views
Tamron 100-400 (Canon EF) sharpness
I'm puzzled by how the results that "The Digital Picture" have received while testing the new Tamron 100-400 telephoto zoom lens contrast the positive reviews by the actual users all over the Internet....
- 125
0
votes
2
answers
307
views
what technology does Nikon use to reduce moire?
Nikon cameras do incredible job with moire effect even that nikon cameras do not have anti aliasing filter.And i didn't find moire in any situation with my Nikon d7100
- 51
0
votes
2
answers
455
views
Sharp focus photography with APS-C [closed]
So, it happens that I am really passionate about the sharp focus photography, where some points on the picture looks sharper than the usual, just like the example I've attached.
My question is: how ...
- 311
0
votes
2
answers
454
views
Image quality - related to camera or not? Blurry, artificially sharpened images
I bought a D90 camera recently which was well used with 67k shutter actuations.
I took some photos and this is the result:
On the left, you can see that the image looks blurry when zoomed into, ...
- 135
0
votes
3
answers
3k
views
My EFS 17-85 lens doesn't focus or click a picture
I have a Canon EOS 400D with a EFS 17-85 mm lens. The camera doesn't capture a picture with this lens attached. It focusses back and forth exactly once per click. I tried with different modes and its ...
- 457
0
votes
3
answers
187
views
Canon EF 40mm f2.8 consistently sharp across the frame?
Does the EF 40mm f/2.8 lens give sharpness not just at the center but also to the periphery most of the time..? In comparison with the 50mm f/1.8 STM which only very sharp at the center..?
I have done ...
- 137
0
votes
1
answer
496
views
Can a filter make an image sharper?
A recent social media campaign by Urth, promoting their new magnetic filters, claims to increase sharpness (emphasis my own)
Our professional Ultraviolet Filter Plus+ cuts UV light to make your ...
- 527
0
votes
2
answers
81
views
How is reflection sharp when not in DOF range? [duplicate]
This is baffling to me. When you use fast lens and you focus on a subject, you'd think that everything that's not in DOF range would be blurred but this is not the case if the object is a mirror or ...
- 201
0
votes
3
answers
870
views
How will a teleconverter affect the sharpness of a lens at a given aperture?
If I have a 200mm f2.8 lens and apply a 2x teleconverter the effective focal length and aperture becomes 400mm and f5.6. However, I am unsure about the effect this has on other aspects, such as image ...
- 200
0
votes
1
answer
538
views
Lens quality impact on sharpness
I have a Nikon D7200 and recently took it on a trip where I shot with both the kit AF-S 18-140 f/3.5-5.6 ED VR lens and the Nikon AF-S 24-70 f/2.8G ED lens.
While I consider myself a relatively good/...
- 904
0
votes
4
answers
3k
views
How do I compare two similar images' sharpness?
Is there a tool that can help you do such thing? Can photoshop do it? Matlab can, but I don't want to use it.
- 11
0
votes
1
answer
106
views
Should I use a lower resolution because of lens sharpness?
I am using the Nikon D5300 with the kit 18-55mm VR lens. According to DXOMark, the sharpness with that lens is only 9 Megapixels. Is it worth shooting at 24 Megapixels if the lens is only resolving 9?
...
- 101
0
votes
1
answer
3k
views
Nikon d5500 troubleshooting blur unsharp at 100% [duplicate]
I am using a Nikon d5500 with Nikor 18-55 br lens. I was able to get some great photos outside during one set of shots. I noticed since then, when I use the zoom magnifying feature on the lcd, all of ...
- 1
0
votes
2
answers
507
views
Is the HF-DC1 flash light a good choice for my Canon EOS 400D?
I want to buy an external flash light for my Canon EOS 400D.
Is HF-DC1 good enough or is it designed for more compact cameras?
Any suggestion on alternatives?
- 145
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